Patents by Inventor Thomas Edward Cooney

Thomas Edward Cooney has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method and apparatus for reducing non-linear characteristics of a signal modulator by coherent data collection
    Patent number: 6426822
    Abstract: A pilot signal is generated and injected into the input (108) of a signal modulator (104). The harmonic signal of a pilot signal produced at the output (110) and due to the non-linear transfer function of the signal modulator (104) is coherently sampled in the time domain to produce a plurality of digital samples. The digital samples are averaged to produce an average harmonic signal value. The bias voltage at which the signal modulator (104) is biased is adjusted to minimize the magnitude of the average harmonic signal value.
    Type: Grant
    Filed: June 25, 1998
    Date of Patent: July 30, 2002
    Assignee: IPICOM, Inc.
    Inventors: Gary Edwin Winter, Thomas Edward Cooney
  • Method and apparatus for reducing non-linear characteristics of a signal modulator by cross-correlation
    Patent number: 6014241
    Abstract: A pilot signal is generated and injected into the input (108) of a signal modulator (104). The harmonic signal of a pilot signal produced at the output (110) and due to the non-linear transfer function of the signal modulator (104) is coherently sampled in the time domain to produce a plurality of digital samples defining a digital sample signal. The digital sample signal is cross-correlated with a reference signal having a phase based on the pilot signal to produce a cross-correlation signal. The bias voltage at which the signal modulator (104) is biased is adjusted to minimize the difference between the phase of the correlation signal and an optimum phase value corresponding to a linear mode of operation of the signal modulator 104.
    Type: Grant
    Filed: June 25, 1998
    Date of Patent: January 11, 2000
    Assignee: Tacan Corporation
    Inventors: Gary Edwin Winter, Thomas Edward Cooney